I am trying to use the Google generated API library for the first time for Android. I have taken code from the the Sample Program provided by Google. My code looks like
You must explicit add library reference of google-http-client-1.5.0-beta.jar(right click project->Properties->Java Build Path->Add External JARs), don't believe class path.
If you do not do this, in the apk file does not contain the required data。
You can download Google plus library from here google-plus-java-starter_v5.zip